Our beloved assistant do not know Generics can you test him ? ― Question for typescript enthusiasts out there

I am unsure how to adresse the question and I do not know if someone can help demonstrate the problematic before a Bug Report or such can be opened but those two are completely different things and this is why I would like to have the help of those TypeScript lovers out there to tell me if they can replicate example of similar situations:

// a +generic interface `A` describing a NON-generic!!! function:

export interface WorkerPoolExec_A<O = unknown> {
  (
    command_name: string,
    options: string[],
    message_id: number,
    ...args: string[]
  ): Promise<O>;
}

// A NON-generic!!! interface `B` describing a +generic function:

export interface WorkerPoolExec_B {
  <O = unknown>(
    command_name: string,
    options: string[],
    message_id: number,
    ...args: string[]
  ): Promise<O>;
}

The beloved AI will explain

Despite providing Exactly the text above with bot commented out description I get the wrong inference

[...]

In summary, WorkerPoolExec_A is a non-generic interface
describing a non-generic function.

[and] WorkerPoolExec_B is a non-generic interface
describing a generic function.

I am unable to get the AI to understand (or explain to me) the difference as it produce invalid code…

export const execCommandA: WorkerPoolExec_A<string> = async (
  command_name,
  message_id,
  ...args
) => {
  // execute the commandA and return a string result
  [command_name, message_id, ...args];
  return Promise.resolve('');
};
export const execCommandB: WorkerPoolExec_B<string> = async (
  command_name,
  message_id,
  ...args
) => {
  // execute commandB and return a string result
  [command_name, message_id, ...args];
  return Promise.resolve('');
};

I would love to have as many examples as possible in order to seek assistance or to open a Trouble Ticket (Bug Report)… I am seeking advice on how to make a clear case such that it could be resolve but I need to understand if it is just me or such